Clean400

iTrader: (2)

Clean400's Centrifugal Supercharged Nitrous 1UZ

Attachment 499401

Let's start off with the mods I've done so far.

Suspension Setup: NF210 / Tokico Blues

Comfortable suspension, more sporty than stock. Only a slight drop. Great for people who want to keep that Lexus feel. Suspension is very smooth. Inexpensive too. This combo was only $500. I chose it after it being so well recommended on these forums.

Poly eurathane Steering Rack Mounts made the car's steering feel much sportier, tighter and responsive.

Ebay front strut bar made a very small but noticeable difference. I didn't think I would actually notice it. Maybe it's a placebo lol


Wheels: TRD Sports18"

18x9.5 rear and 18x8.5 front. These are TRD Sports in Supra offset sizing with 40 front and 38 rear. They were sold to me as "TRD T3's" from this JDM shop near me but they are in fact TRD Sports wheels in Supra offset sizing. What's interesting is that TRD Sports wheels are not listed as coming in these offsets on the TRD website. My friend has TRD T3's and they are indeed a different design than the TRD Sports that I have.
http://www.trdparts.jp/english/parts_wheel-sport.html

Overall a great wheel. Only weigh 17-18 pounds a piece. Improved handling, acceleration and braking. Everything about the car felt better. Never realized good wheels would much such a difference.

Transmission & Differential Transgo HD2 Shift Kit, 4th Solenoid Mod, B&M Trans Cooler 70264, 2800RPM Torque Converter Converter, Torsen JDM Supra N/A 4.08 Gear Differential

I have the Transgo HD2 Shift kit on hot setting. Chirps the tires when it shifts. Car feels much faster with it. Best mod for the A340 transmission. This mod is a must if you're planning on boosting with the stock auto.

Link to Transgo Shift Kit Thread

I have the 4th solenoid mod wired on a switch. When the solenoid is off, you can really tell the increased line pressure through the transmission. By moving the shift lever from park to drive it really jerks hard into drive. With the solenoid on, it doesn't have this huge jerk. Since I have the Transgo Shift Kit I already have boosted line pressure so the effects of the 4th solenoid mod are more pronounced. Although I do notice the increased line pressure when switching from park to drive, the increased line pressure is not noticed when going WOT or changing gears. This is probably because the 4th solenoid is there to gradually increase the line pressure. So with the 4th solenoid set to on, my line pressure at a stop is normal and then increased to full line pressure when shifting at WOT. With the 4th solenoid mod off, my line pressure is at max all the time.

For these reasons, I actually just drive around with the 4th solenoid mod ON like stock. I have comfortable lexus like shifting at low speed and great crisp shifting with the Transgo at WOT. I have to do further testing if the increased pressure of the 4th solenoid mod gives me better times, but to be honest from a seat of the pants feeling it does not. I could see if someone did not have the Transgo kit, that the 4th solenoid mod would be a very small upgrade. The 4th solenoid mod however does not compare to the effect of the Transgo shift kit at all.

I have the Hot Rod setting on my Transgo kit. The hot rod setting is simply the size you drill the holes in your valve body. The kit comes with two drill bits; Truck sized and Hot Rod sized. The hot sized are larger and will make your auto chirp your tires during WOT shifts. It is a great setting for fun but for all out 1/4 mile time performance it is probably not. I think a drill size between truck and hot rod would be ideal. I've never tried truck setting, but if you were you could start with it and then go up from there. I'd imagine a drill bit size right under Hot Rod would be just perfect. I'm just worried when I slap on my supercharger that my rear is going to get squirly on shfits with Hot Rod settings. Transgo shift kit a huge thumbs up

2800rpm converter, Torsen differential and 4.08 gears were all installed at once. This made a dramatic effect on launch characteristics of the car. The combination of the three made flooring it off launch incredibly fun. The car felt a lot faster form a seat of the pants feeling. The driving characteristics of the Torsen are also much better than the open differential. For example, I had the shift kit installed with the open differential, and when it was raining I went full WOT 1-2 shift and the car bucked sideways completely. With the Torsen differential everything is smooth and in control, so you can have fun at the limit. Installed poly eurathane differential mounts as well. Overall these upgrades were a huge plus

Supra Mishimoto Radiator: Temps are cooler. Looks good. There is a thread somewhere on clublexus to show how to install it and use your stock fan shroud. You just have to flip the stock rad mounts upside down underneathe to raise the Mishimoto to the right height. Install looks spot on, looks like it was almost meant to be stock. Works great with the stock fan and shroud

Brakes: LS400 BBK, SS Lines, Semi-Metallic Pads (soon to be switched back to ceramic).

Great stopping power over stock. The LS400 calipers are much better than the stock sc400 fronts. The semi-metallic pads bite extremely hard. The only downfall of the semi-metallic pads is that they squeal. For this reason I will be switching back to ceramic pads, but if you want strong brake bite use semi-metallic you won't be let down.

Cosmetic:

Green Lip & B-Pillars: The matching B-pillars with the rest of the car bring the look up to date. The black b-pillars with the green looked kind of old school. Looks much better in my own opinion. The matching front lip with the rest of the car looks much sleeker.

95 Tails & High Beams: Glass high beams look better than plastic. 95 Tails are the nicest tails in my opinion. I have hyper blink which I will try to fix with some resistors one day.

ES300 Wood Steering: Great looking steering wheel. I had my steering wheel leather refinished to match the grey interior of the car. The wood model es300 steering wheel I chose matches the wood on the SC400 interior. Looks classy and much better than the original steering wheel.

Antennae delete: Had a bodyshop do this. Removed the entire antennae unit and still get radio reception. I only get the two major channels in my area now but I don't listen to radio anyways.

Audio:

F700BT Pioneer in modified metra bracket (see thread on clublexus. Metra bracket sucks without modification). Looks flush in the dash. Updates the look of the car over the stock radio. 6.5" Infinity Components and 10" Lightning Audio subwoofer powered by a 4 Channel Lightning Audio Amplifer. Modified the stock speaker pods on the doors to accommodate 6.5" speakers. Made brackets for 6.5" speakers in the rear deck. Amp and sub are not in the car right now but will be in soon. The stock Nakimichi system sounded amazing though, I still regret removing it. When my new amplifier gets intalled and my speakers get amplified again I'll be happy.

Nitrous: Nano Nitrous, Wet Kit, Zex Window Switch & TPS (Soon to be upgraded to NX Maximizer 4)

My Nitrous Guide Thread

I'm using a Nano Nitrous setup. It is a second bottle filled with compressed air that keeps the nitrous bottle constantly at 950psi. Usually a bottle warmer is needed to get the nitrous to this PSI. The advantage to this setup is that you are always ready to boost, it is easier to tune, it makes the nitrous hit harder and your PSI stays constant right until' the end of the run. Overall I couldn't be happier with the setup as it removes all the disadvantages of nitrous (except refilling the bottle). Currently my nitrous system is only using 50 shot jets. My current controller is a straight shot controller. My plan was to install a progressive system and run a 150 shot. My plans changed when I bought my supercharger though. New plan is to install 75 jets and use the NX 4 Maximizer controller to spray nitrous in 2nd and 3rd gear on top of the boost of the supercharger. Plans get upgraded but that's the safe plan for now.

Attachment 499402

Parts waiting to be installed

• AEM FIC 8: I will use one map for the supercharger and the other for supercharger + nitrous.
• AEM Failsafe Wideband
• NX Maxmizer 4: Progressive nitrous controller that I will spray nitrous in 2nd and 3rd gear. I will avoid spraying nitrous in 1st gear until' I upgrade the 2nd gear sprag. The 2nd gear sprag in the A340 can only handle about 340whp. With 6psi, will be around 300whp hopefully. The 75 shot of nitrous should get me close to 400whp because the boost increases the effect of nitrous. Once I build my auto with an ATF billet 2nd gear sprag and Red Alto HD clutches, I'll up the boost and the nitrous (but this will only be in a few years).
• GTspec Rear Strut Bar
• Denso Supra TT F/P
• Titan Line Lock Kit
• Two Jeniko Nitrous Bottle Brackets for easy removal of bottles
• Tweaked performance patch harness for FIC 8

Centrifugal Supercharger Build:

Bought a used Vortech V3 Si Going to make it brand new before installing. I ordered the rebuild kit from superchargerrebuilds.com with a mechanical seal. Cost for the rebuild kit was $225.

So today I ordered a bunch of parts to get this fishbracket build going. It's called the fishbracket build because the bracket that holds the supercharger looks like a fish. Did a lot of research to find the right parts for the job. Thanks to members of Lextreme, Clublexus and Supraforums for all the info posted online.

Bypass Valve: Audi TT and Porsche 710N Bypass Valve

Part # 06A 145 710 N



This is what the mustang guys use to upgrade the bypass valve that comes with the vortech kits. The 710N has metal internals and is great bang for the buck. Only $50!

Dual Electric Fan Conversion:

Unfortunately for the SC400, the dual electric fan conversion is needed for space reasons. I don't think it's needed for the LS400 though. The stock fan setup of the SC400 is great, high flow and reliable so it's a shame to take it out. I had to do a lot of research to find a good bang for the buck setup. A lot of the shroud kits out there are not well rated by the Supra community except for one which is pretty pricey, it actually uses is300 fans which are really good.

In the end I ended up going witha two 14" Zirgo ZFU14S setup.


This dual Zirgo setup was well recommended by the supra community. Plenty of people use these two fans without a shroud, so I will be going down this route. Total cost for the two fans was $260

The fan controller I ordered was Flex-A-Lite 31163. This is a variable fan controller that has a lot of nice features for the money. It has good reviews online. Cost was $165



LS400 Fan Bracket and Pulley

This is needed for the fishbracket.


Cost was $57 shipped online. I ordered a cheap non-oem part. Hopefully it holds up.

The Pulley does not come with the fan bracket. The part number for the pulley is 16371. I ordered this from Lexus of South Atlanta for $70 shipped. That was the cheapest price I could find it.



Next up I need to choose my pulley for the supercharger. I plan to start with 6psi non intercooled. This should be plenty fun to start with and should give me an estimated 300whp. I plan to try to use my stock injectors, if I see they are not up to par I will upgrade them to 7M green injectors 315cc.

For the pulley I'm having difficulty in choosing the size I want to order. I'm thinking of ordering 3.48" to give me about 6psi. Any feedback would be much appreciated.

All that's left to buy is the vortech pulley, belt, piping and some miscellanious wiring to relocate the battery to the trunk. I also have to copy the EGR Delete & Fishbracket that my friend's have (would order from lextreme but parts ordering is hopefully only temporarily closed). Apparently the EGR delete is necessary or you won't build boost (you get boost leaks). From what I read I need 7/16" x 127mm bolts and 103mm spacers (the spacers I'm not 100% sure, this is from what I read on a forum). It's too bad I can't order the bolts and spacers directly from Lextreme right now.

This 6psi non-intercooled setup with a 75hp shot of progressive nitrous should be pretty fun. After enjoying this setup for a few years the plan is to go built auto, slap on an intercooler and crank up the boost. The neat thing about the nitrous is that I can spray in 2nd and 3rd gear and avoid busting the 2nd gear sprag on 1-2 shift which is the weak link of the stock A340.

Super excited to get this supercharger build started! I'm away from home for work until' October, so all I can do right now is read on forums and learn more about this setup. The plan is to get everything done before winter comes so that way I can enjoy the car at the start of next summer. Here's hoping everything goes well.

The plan is to have the supercharger piping setup looking like this (not my car):



BOOOOOOSSTTTTT

IanWatson

iTrader: (4)

damn! i want to do the same thing

Tabaka

iTrader: (8)

I like where this is heading. Best of luck, seems like a lot of thought has been developed for this build.

PseudoK

I gotta know, with all this work, why not a manual transmission?

Clean400

iTrader: (2)

Do it! I see your in BC. I'm actually here right now. I might be moving to Vancouver haha.

Thanks. I like to take my time and research other people's builds to learn what worked and what didn't. Hopefully I can take all of this info and build a reliable supercharged daily driver. Luckily my back-up car is another SC haha.

It's definitely something that's crossed my mind many times. I'm kind of a gadget guy and the capabilities of the stock auto intrigue me. The a340 has so much potential with minor mods. It's much cheaper to go built auto than do a manual swap. I'm also a bang for the buck guy, and I can build this auto to hold a lot of WHP without much money. If I were to go manual it would be R154, V160 or T56. A manual swap once all is said and done is a significant investment. I'd rather be spending that money on my supercharger build right now. There are times that I wish I had manual but there are probably more times that I like the cruising enjoyment of the automatic. I'm not going to say no but for now but the plans are to go built auto. In the perfect world I would have both an auto SC and a manual SC. (and maybe I can make this happen one day haha).

sunami02

iTrader: (2)

Nice!!! build.... POST VIDS LATER!!!

MMCtuner

Go Clean400! Go!!
I´m kinda stuck right now with my SC as the turbo broke and, because of that, MAF and I-dont-know-what-else got oiled and fails. Now it´s a N/A engine with some extra pipping and not perfectly running, lol. I´m getting another MAF and will do some maintenance to keep it running as a good N/A 1uz.
Later a 6262, bigger injectors and some tuning will give it back to life.
I´ll follow your build as we share many things (besides the love for the 1uz) to help if I can and do next if you´re first (as with the TransGo kit)
P.S.: do you already bought this?: "Tweaked performance patch harness for FIC 8"

Clean400

iTrader: (2)

Thanks! For sure!

MMCtuner! Sucks to hear your turbo went! But that 6262 turbo should be real fun. Going for bigger boost this time around? How did the auto tranny hold up with your boost? I'm glad I did the transgo before this mod haha. Gotta love that 1uz! Amazing how we can share info over the internet about our setups and your in Argentina and I'm in Quebec haha.

Yes I already bought the Tweaked Performance patch harness. It's not specifically meant for FIC 8, I'm just using it for the FIC 8. So I don't have to splice my stock wiring. Found it on ebay for $200. New its $275.

I did some more shopping and got some more needed parts for the build.

Battery Relocation kit with Box and Wires for $100. From a seller called merchantsellers on ebay.



Ordered Lextreme EGR delete kit off of a clublexus member. $90



Ordered 3.48" Pulley. $90 shipped. Hopefully this gives the desired 6psi.



I did research on the spacers that I needed. Mickesandra who has a vortech v3 si build said his spacers ended up being 105mm.

Onlinemetals.com sells stainless steel tubing that can be cut to specific length.

Stainless T-304/304L
Seamless Tube
0.75" x 0.12" x 0.51"
Cut to: 4.1339"

6 spacers would cost $73 shipped. I almost ordered it but decided to wait to make my own measurements. I wouldn't want to waste $73. I'll probably source some stainless steel tubing locally.

So all I need now is the 7/16" x 5" bolts, spacers, fishbracket and piping. I posted an ad that I was looking to buy a fishbracket on clublexus. These are getting hard to find since Lextreme isn't selling parts anymore. It would be so much easier if I could buy his bolt and spacers kit! Someone should start producing these again. Soon there will be none left on the used market. I'm probably going to have to copy my friend's fishbracket.

Now that my buying spree has come to an end I'll be patiently waiting to return home at the end of the month and getting this build started.

Centrifugal Setup Checklist:

1. Use a Bypass Valve

2. Use a piggyback/standalone to control fuel tuning

3. Don't go over 7psi on stock injectors.

4. Block the EGR

5. Dont' use a BOV (Bad idea with a MAF setup. If your using MAP it's okay but centrifugal's from what I read work best with bypass valves).

MMCtuner

Yeah! This is awesome!
you wont need nor want a bov as you're running an auto trans.
Mine held up very well, car went sideways from 1st to 2nd, and those instant gear changes, oh my...
I'd suggest that you connect the blower and pipping first, before changing injectors and stuff, just keep your wg at low psi. After make this to work then yes, upgrade the rest. I think most of the problems are not directly related to the centrifugal sc, but other minor problems that, when all is installed, its harder to solve.
Yes, I'm going harder this time. Aiming at 12psi and around 500rwhp. But you'll see that's not needed, because with little amounts of boost is already a beautiful and fun beast.

8052JZ

iTrader: (13)

Hey got a request for you if possible. Read up
On those fans and they seem legit from what others have said. But, I'm interested to know how lowed they are?!? Can you possibly post a video of them running for a few seconds to get an idea of how lowed they are? That would be awesome.. I Might be getting a set over oem sense these with give me the cleanse I'm looking for.

Thanks

Clean400

iTrader: (2)

500whp should be beastly. Planning on building up your auto for that much hp? I'm definitely starting low boost to get it working. I'll probably be pretty happy with 6psi. I already find my car to be fast lol but I know it's not a rocket... yet.

I ordered the fans but they are not installed. I'm away on business right now and I'll only be home at the end of the month. As soon as I get home the build will start and I'll post a video of the fans.

sunami02

iTrader: (2)

Hey!!!! I got some 1uz internals that you could be interested in!!!!!

FAT HEAD

iTrader: (1)

Man I love this!! this forum could use some more 1uz love!

SC400TT

iTrader: (4)

Nice build/Set up! In for the ride...Glad to see another FI 1UZ!!

Ryan

Back2aday

very very nice wish i had that in my 5 speed 400